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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-589.786537
Energy at 298.15K 
HF Energy-589.786537
Nuclear repulsion energy186.354206
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at BLYP/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2280 2268 63.80 72.46 0.15 0.26
2 A1 819 814 59.01 6.50 0.00 0.00
3 A1 404 402 50.48 0.74 0.65 0.79
4 E 981 976 192.30 0.42 0.75 0.86
4 E 981 976 192.33 0.42 0.75 0.86
5 E 810 805 17.68 6.17 0.75 0.86
5 E 810 805 17.68 6.17 0.75 0.86
6 E 291 289 8.94 0.45 0.75 0.86
6 E 291 289 8.95 0.45 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3833.0 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 3811.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at BLYP/6-31G(2df,p)
ABC
0.23275 0.23275 0.13331

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.323
H2 0.000 0.000 1.793
F3 0.000 1.490 -0.234
F4 1.290 -0.745 -0.234
F5 -1.290 -0.745 -0.234

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.47031.59011.59011.5901
H21.47032.51542.51542.5154
F31.59012.51542.57992.5799
F41.59012.51542.57992.5799
F51.59012.51542.57992.5799

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.492 H2 Si1 F4 110.492
H2 Si1 F5 110.492 F3 Si1 F4 108.431
F3 Si1 F5 108.431 F4 Si1 F5 108.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.338      
2 H 0.009      
3 F -0.116      
4 F -0.116      
5 F -0.116      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.065 1.065
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.485 0.000 0.000
y 0.000 -28.485 0.000
z 0.000 0.000 -25.811
Traceless
 xyz
x -1.337 0.000 0.000
y 0.000 -1.337 0.000
z 0.000 0.000 2.673
Polar
3z2-r25.347
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.228 0.000 0.000
y 0.000 3.227 0.000
z 0.000 0.000 3.319


<r2> (average value of r2) Å2
<r2> 83.289
(<r2>)1/2 9.126